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CVE-2017-5378

Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered…

High7.5EPSS 3.3%
Published
Updated
Reserved
Assigned by
mozilla

Description

Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Scores

CVSS scores of CVE-2017-5378, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0High7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (exploitation in 30 days)
3.3% · top 12% of all CVEs (3 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • Mozilla · Thunderbird

    • affected unspecified – < 45.7

  • Mozilla · Firefox ESR

    • affected unspecified – < 45.7

  • Mozilla · Firefox

    • affected unspecified – < 51

References (13)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .